﻿/* Copyright (c) 2001-2008, The HSQL Development Group
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the HSQL Development Group nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Net.Sockets;
using System.Net;
using EffiProz.Core.RowIO;
using EffiProz.Core.Lib;
using EffiProz.Core.Lib.IO;
using EffiProz.Core.Results;

/**
 * HTTP protocol session proxy implementation. Uses the updated HSQLDB HTTP
 * sub protocol.
 *
 * @author fredt@users
 * @version 1.7.2
 * @since 1.7.2
 */
namespace EffiProz.Core.Server
{
    public class ClientConnectionHTTP : ClientConnection
    {
        static Encoding ENCODING = Encoding.GetEncoding("iso-8859-1");
        const int IDLENGTH = 12;    // length of int + long for db and session IDs

        public ClientConnectionHTTP(String host, int port, String path,
                                    String database, bool isTLS, String user,
                                    String password, int timeZoneSeconds)
            : base(host, port, path, database, isTLS, user, password, timeZoneSeconds)
        {

        }

        protected override void initConnection(String host, int port,
                                      bool isTLS) { }

        public override Result execute(Result r)
        {
            lock (this)
            {
                base.openConnection(host, port, isTLS);

                Result result = base.execute(r);

                base.closeConnection();

                return result;
            }
        }

        protected override void write(Result r)
        {
           
            DataOutputStream output = new DataOutputStream(dataOutput);

            output.Write(ENCODING.GetBytes("POST "));
            output.Write(ENCODING.GetBytes(path));
            output.Write(ENCODING.GetBytes(" HTTP/1.0\r\n"));
            output.Write(ENCODING.GetBytes("Content-Type: application/octet-stream\r\n"));
            output.Write(ENCODING.GetBytes("Content-Length: " + rowOut.size() + IDLENGTH
                              + "\r\n"));
            output.Write(ENCODING.GetBytes("\r\n"));
            output.WriteInt(r.getDatabaseId());
            output.WriteLong(r.getSessionId());

            r.write(dataOutput, rowOut);
        }

        protected override Result read()
        {

            // fredt - for WebServer 4 lines should be skipped
            // for Servlet, number of lines depends on Servlet container
            // stop skipping after the blank line
            rowOut.reset();

            for (; ; )
            {
                int count = InOutUtil.readLine(dataInput, rowOut as ByteArrayOutputStream);

                if (count <= 2)
                {
                    break;
                }
            }

            //
            Result result = Result.newResult(dataInput, rowIn);

            result.readAdditionalResults(this, dataInput, rowIn);

            return result;
        }

       
    }
}
